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A231193 Number of (n+1)X(2+1) 0..2 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order 2
67, 1413, 31665, 704428, 15698874, 349736292, 7791727354, 173590087438, 3867375772894, 86160416104014, 1919549013278026, 42765211455425302, 952756766481301782, 21226259035646084422, 472895169574435473198 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A231199

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 22*a(n-1) +7*a(n-2) -24*a(n-3) +218*a(n-4) -1474*a(n-5) -4420*a(n-6) +892*a(n-7) +1572*a(n-8) +5428*a(n-9) +124572*a(n-10) +179816*a(n-11) -55176*a(n-12) -492608*a(n-13) -667584*a(n-14) -56192*a(n-15) +368640*a(n-16) +246784*a(n-17) -61440*a(n-18)

EXAMPLE

Some solutions for n=3

..0..1..2....0..1..1....0..0..1....0..1..0....0..1..2....0..0..0....0..1..1

..2..1..1....1..0..2....1..2..1....0..0..1....1..0..1....1..1..1....0..0..0

..0..1..2....1..1..0....0..2..2....2..2..2....2..1..1....1..0..2....1..2..2

..1..0..0....0..0..2....1..0..1....0..0..0....2..0..0....2..1..0....1..0..1

CROSSREFS

Sequence in context: A032651 A322880 A157665 * A078850 A092795 A017783

Adjacent sequences:  A231190 A231191 A231192 * A231194 A231195 A231196

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 05 2013

STATUS

approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)